Virtual boats under my command

USS S-40 (SS145) a Group III, Holland Type, S-Class Submarine

Displacement: At most 906 tons surfaced, 1230 Submerged
Length: 219–240 ft (67–73 m) (S-2 207 ft (63 m))
Beam: 21–22 ft (6.4–6.7 m)
Draft: 13 ft 1 in–16 ft 1 in (3.99–4.9 m)
Speed: 14 knots (26 km/h; 16 mph)-15 knots (28 km/h; 17 mph) surfaced
Range: 5,000 nmi (9,300 km; 5,800 mi) at 10 kn (19 km/h; 12 mph) surfaced
Test depth: 200 ft (61 m)
Complement: 38
Armament:
USS S-40 (SS145), 7 Jun 1942 – 4 Jan 1943

USS Seal (SS-183), a Salmon Class submarine

Displacement: 1,435 long tons (1,458 t) standard, surfaced, 2,198 long tons (2,233 t) submerged
Length: 308 ft 0 in (93.88 m)
Beam: 26 ft 1 14 in (7.957 m)
Draft: 15 ft 8 in (4.78 m)
Propulsion: 4 × Hooven-Owens-Rentschler (H.O.R.) 9-cylinder diesel engines (two hydraulic-drive, two driving electrical generators), 2 × 120-cell batteries, 4 × high-speed Elliott electric motors with reduction gears, two shafts, 5,500 shp (4.1 MW) surfaced, 2,660 shp (2.0 MW) submerged
Speed: 21 knots (39 km/h) surfaced, 9 knots (17 km/h) submerged
Range: 11,000 nautical miles (20,000 km) @ 10 knots (19 km/h)
Endurance: 48 hours @ 2 knots (3.7 km/h) submerged
Test depth: 250 ft (76 m)
Complement: 5 officers, 54 enlisted
Armament: 8 × 21 inch (533 mm) torpedo tubes (four forward, four aft; 24 torpedoes), 1 × 3 in (76 mm)/50 cal deck gun, four machine guns
USS Seal, 7 Feb 1943 – ???